Questions tagged [video]
The video tag has no usage guidance.
17
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Why does my Dell laptop monitor give this weird color banding?
I've noticed some very obvious color banding on the screen of my Dell Precision 7750 laptop while watching video (same in every video program; VLC, built-in Windows video player, etc.) Not only does ...
0
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1
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53
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Animated rainbow distortion wave effect
https://foundation.app/mg/20210227-3lau-makes-history-1790
The link above shows a video animation that has a rainbow wave distortion effect applied to it, that ripples across the video. how, and in ...
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47
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Building a higher-res detailed image from a video
I'd like to know if the following technology already exists, and if not, how feasible it would be to create something like this:
I came up with an idea for creating a higher-res image that is put ...
1
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1
answer
115
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Is it possible to decode and play e.g. 60fps video as 30fps, if computer is too slow for 60fps?
I am wondering this, as e.g. YouTube offers some videos 60fps, but computer may be too slow to play them.
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55
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What fast algorithms can generate not-realistic but quite handsome animated landscapes?
I was looking for algorithms that quickly compute quite nice realistic, or not realistic, animated landscapes, in video format ("animated" = the camera moves, or the water is animated, etc.) But all I ...
0
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1
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61
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What would be an example of decoding-intensive video?
my question might come in a bit weird but I'm looking for something that would be considered very CPU-intensive video to decode (for playback I mean). I would like to have some sample of 1080p and 4k ...
1
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2
answers
547
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Rendering 3-D point clouds obtained from depth maps as a 2.5D video
Suppose I have code to generate a bunch of frames, each of which is a depth map(I have access to the matrices which represent depth) which in turn is used to generate a point cloud. One frame would ...
2
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0
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202
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debugging VGA signal timings for 640x480 @ 60hz
I am trying to get started with implementing a basic display (i.e a simple red screen) onto a VGA monitor by programming a Xilinx spartan3a fpga for the same.
I have studied about the signal timings ...
4
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1
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1k
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Non real-time rendering on Unity3D
I made an audio visualizer using Unity3D (you can see it here) but I am not satisfied on the video quality, as the compression destroys the graphics. I recorded the screen during a real-time rendering....
1
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0
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2k
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YUV (NV12) Chroma subsampling while converting from RGB image
I convert RGB input to YUV 420 semi-planar output using compute shader.Luma plane is straightforward as it maps 1:1 with RGB dimensions. As we know, NV12 packs Cb and Cr into one plane, which means ...
1
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0
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143
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Is 100 Hz really 100 Hz, or is it 99.97Hz
We are trying to check some hardware and our 100Hz video card is running at 99.97Hz. Maybe this is just the natural speed of the chip and it is called 100Hz. I would have thought, however, that ...
5
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3
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773
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Was Evans & Sutherland CT5 really created in 1981?
A few days ago I found a video on Twitter showing the Evans & Sutherland CT5 Flight Simulator system. It was labeled as 1981 footage and looked really amazing. The first time I saw similar 3D ...
2
votes
1
answer
153
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A way to save 360° panorama video
What is the best way to save video from faces of a cube? The render can produce 6 squares (90°x90°) of 1024x1024 resolution. Faces oriented along axies and only position is changed continuously. I ...
1
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0
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451
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Streaming video camera input from WebCamTexture on mobile? (Possibly via WebRTC or websocket?)
I'm building an application where I stream video camera feed from one mobile device to another in Unity. I tried searching for answers, but most of the topics deal with how to display a video stream, ...
2
votes
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165
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Converting from 360 degree vr to rectangular
What I am interested in doing is taking a 360 degree stereo video (Oculus Rift etc), and a description of how the viewing direction changes with time (rather than reading from gyroscopes) and then ...
7
votes
1
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201
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What is the state-of-the-art on using computers to "clean-up" images?
TWO PART QUESTION - We've all seen the movies/TV shows where the police/feds/spies use computer software to take a grainy photo and do a "clean-up" to see a better picture and more details. I assume ...
8
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3
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334
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How to denoise video?
Video noise is random and not correlated in time. I assume, the best method is using wavelet denoise in this case, right? If yes, how is wavelet denoise implemented for video? Is there something to ...